ci: Disable irrelevant parts of xtask

.builds/msrv.yml

@@ -11,4 +11,4 @@ tasks:
       rustup default stable
   - test: |
       cd ruma
-      cargo xtask ci msrv
+      cargo run -p xtask --no-default-features ci msrv

.builds/nightly.yml

@@ -10,4 +10,4 @@ tasks:
       rustup default nightly
   - test: |
       cd ruma
-      cargo xtask ci nightly
+      cargo run -p xtask --no-default-features ci nightly

.builds/stable.yml

@@ -10,4 +10,4 @@ tasks:
       rustup default stable
   - test: |
       cd ruma
-      cargo xtask ci stable
+      cargo run -p xtask --no-default-features ci stable

xtask/Cargo.toml

@@ -5,14 +5,15 @@ authors = ["Kévin Commaille <zecakeh@pm.me>"]
 edition = "2018"
 publish = false
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[features]
+default = ["isahc", "semver", "toml_edit"]
 
 [dependencies]
-isahc = { version = "1.2.0", features = ["json"] }
-semver = { version = "0.11.0", features = ["serde"] }
+isahc = { version = "1.2.0", features = ["json"], optional = true }
+semver = { version = "0.11.0", features = ["serde"], optional = true }
 serde = { version = "1.0.118", features = ["derive"] }
 serde_json = "1.0.60"
 toml = "0.5.8"
-toml_edit = "0.2.0"
+toml_edit = { version = "0.2.0", optional = true }
 xflags = "0.2.1"
 xshell = "0.1.9"

xtask/src/cargo.rs

@@ -3,29 +3,13 @@ use std::path::PathBuf;
 use isahc::{HttpClient, ReadResponseExt};
 use semver::Version;
 use serde::{de::IgnoredAny, Deserialize};
-use serde_json::from_str as from_json_str;
 use toml_edit::{value, Document};
 use xshell::{cmd, pushd, read_file, write_file};
 
-use crate::{util::ask_yes_no, Result};
+use crate::{util::ask_yes_no, Metadata, Result};
 
 const CRATESIO_API: &str = "https://crates.io/api/v1/crates";
 
-/// The metadata of a cargo workspace.
-#[derive(Clone, Debug, Deserialize)]
-pub struct Metadata {
-    pub workspace_root: PathBuf,
-    pub packages: Vec<Package>,
-}
-
-impl Metadata {
-    /// Load a new `Metadata` from the command line.
-    pub fn load() -> Result<Metadata> {
-        let metadata_json = cmd!("cargo metadata --no-deps --format-version 1").read()?;
-        Ok(from_json_str(&metadata_json)?)
-    }
-}
-
 /// A cargo package.
 #[derive(Clone, Debug, Deserialize)]
 pub struct Package {

xtask/src/ci.rs

@@ -4,7 +4,7 @@ use std::path::PathBuf;
 
 use xshell::pushd;
 
-use crate::{cargo::Metadata, cmd, Result};
+use crate::{cmd, Metadata, Result};
 
 const MSRV: &str = "1.45";
 

xtask/src/flags.rs

@@ -1,7 +1,11 @@
 #![allow(dead_code)] // silence never-used warning for from_vec in generated code
 
+#[cfg(feature = "default")]
 use semver::Version;
 
+#[cfg(not(feature = "default"))]
+use std::string::String as Version;
+
 xflags::xflags! {
     src "./src/flags.rs"
 

xtask/src/main.rs

@@ -3,19 +3,23 @@
 //! This binary is integrated into the `cargo` command line by using an alias in
 //! `.cargo/config`. Run commands as `cargo xtask [command]`.
 
-use std::{env, path::Path};
+use std::path::PathBuf;
 
 use serde::Deserialize;
-use toml::from_str as from_toml_str;
-use xshell::read_file;
+use serde_json::from_str as from_json_str;
 
+#[cfg(feature = "default")]
 mod cargo;
 mod ci;
 mod flags;
+#[cfg(feature = "default")]
 mod release;
+#[cfg(feature = "default")]
 mod util;
 
-use self::{ci::CiTask, release::ReleaseTask};
+use ci::CiTask;
+#[cfg(feature = "default")]
+use release::ReleaseTask;
 
 type Result<T> = std::result::Result<T, Box<dyn std::error::Error>>;
 
@@ -33,36 +37,63 @@ fn try_main() -> Result<()> {
             println!("{}", flags::Xtask::HELP);
             Ok(())
         }
-        flags::XtaskCmd::Release(cmd) => {
-            let mut task = ReleaseTask::new(cmd.name, cmd.version)?;
-            task.run()
-        }
-        flags::XtaskCmd::Publish(cmd) => {
-            let mut task = ReleaseTask::new(cmd.name, cmd.version)?;
-            task.run()
-        }
         flags::XtaskCmd::Ci(ci) => {
             let task = CiTask::new(ci.version)?;
             task.run()
         }
+        #[cfg(feature = "default")]
+        flags::XtaskCmd::Release(cmd) => {
+            let mut task = ReleaseTask::new(cmd.name, cmd.version)?;
+            task.run()
+        }
+        #[cfg(feature = "default")]
+        flags::XtaskCmd::Publish(cmd) => {
+            let mut task = ReleaseTask::new(cmd.name, cmd.version)?;
+            task.run()
+        }
+        #[cfg(not(feature = "default"))]
+        _ => {
+            Err("This command is only available when xtask is built with default features.".into())
+        }
     }
 }
 
+/// The metadata of a cargo workspace.
+#[derive(Clone, Debug, Deserialize)]
+pub struct Metadata {
+    pub workspace_root: PathBuf,
+    #[cfg(feature = "default")]
+    pub packages: Vec<cargo::Package>,
+}
+
+impl Metadata {
+    /// Load a new `Metadata` from the command line.
+    pub fn load() -> Result<Metadata> {
+        let metadata_json = cmd!("cargo metadata --no-deps --format-version 1").read()?;
+        Ok(from_json_str(&metadata_json)?)
+    }
+}
+
+#[cfg(feature = "default")]
 #[derive(Debug, Deserialize)]
 struct Config {
     /// Credentials to authenticate to GitHub.
     github: GithubConfig,
 }
 
+#[cfg(feature = "default")]
 impl Config {
     /// Load a new `Config` from `config.toml`.
     fn load() -> Result<Self> {
+        use std::{env, path::Path};
+
         let path = Path::new(&env!("CARGO_MANIFEST_DIR")).join("config.toml");
-        let config = read_file(path)?;
-        Ok(from_toml_str(&config)?)
+        let config = xshell::read_file(path)?;
+        Ok(toml::from_str(&config)?)
     }
 }
 
+#[cfg(feature = "default")]
 #[derive(Debug, Deserialize)]
 struct GithubConfig {
     /// The username to use for authentication.

xtask/src/release.rs

@@ -14,12 +14,7 @@ use semver::{Identifier, Version};
 use serde::Deserialize;
 use serde_json::json;
 
-use crate::{
-    cargo::{Metadata, Package},
-    cmd,
-    util::ask_yes_no,
-    GithubConfig, Result,
-};
+use crate::{cargo::Package, cmd, util::ask_yes_no, GithubConfig, Metadata, Result};
 
 const GITHUB_API_RUMA: &str = "https://api.github.com/repos/ruma/ruma";